e5d9fce03f
Divert LCC compiler as a new one, instead of treating it as GNU. Since old times, Elbrus C/C++/Fortran Compiler (LCC) by MCST has been passing checks for GNU compilers, so it has been identified as GNU. Now, with intent of seriously upstreaming its support, it has been added as a separate LCC compiler, and its version displays not a supported GCC version, but LCC version itself (e.g. LCC 1.25.19 instead of GNU 7.3.0). This commit adds its support for detection, and also converts basically every check like 'is this compiler GNU?' to 'is this compiler GNU or LCC?'. The only places where this check is untouched, is where it regards other platforms where LCC is unavailable (primarily non-Linux), and where it REALLY differs from GNU compiler. Note: this transition may break software that are already ported to Elbrus, but hardly relies that LCC will be detected as GNU; still such software is not known.
276 lines
11 KiB
CMake
276 lines
11 KiB
CMake
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# file Copyright.txt or https://cmake.org/licensing for details.
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cmake_policy(PUSH)
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cmake_policy(SET CMP0053 NEW)
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cmake_policy(SET CMP0054 NEW)
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# Function to parse implicit linker options.
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#
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# This is used internally by CMake and should not be included by user
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# code.
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#
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# Note: this function is leaked/exposed by FindOpenMP and therefore needs
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# to have a stable API so projects that copied `FindOpenMP` for backwards
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# compatibility don't break.
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#
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function(CMAKE_PARSE_IMPLICIT_LINK_INFO text lib_var dir_var fwk_var log_var obj_regex)
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set(implicit_libs_tmp "")
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set(implicit_objs_tmp "")
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set(implicit_dirs_tmp)
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set(implicit_fwks_tmp)
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set(log "")
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set(keywordArgs)
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set(oneValueArgs COMPUTE_IMPLICIT_OBJECTS)
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set(multiValueArgs )
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cmake_parse_arguments(EXTRA_PARSE "${keywordArgs}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
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# Parse implicit linker arguments.
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set(linker "CMAKE_LINKER-NOTFOUND")
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if(CMAKE_LINKER)
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get_filename_component(linker ${CMAKE_LINKER} NAME)
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string(REGEX REPLACE "([][+.*?()^$])" "\\\\\\1" linker "${linker}")
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endif()
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set(startfile "CMAKE_LINK_STARTFILE-NOTFOUND")
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if(CMAKE_LINK_STARTFILE)
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set(startfile "${CMAKE_LINK_STARTFILE}")
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endif()
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# Construct a regex to match linker lines. It must match both the
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# whole line and just the command (argv[0]).
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set(linker_regex "^( *|.*[/\\])(${linker}|${startfile}|([^/\\]+-)?ld|collect2)[^/\\]*( |$)")
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set(linker_exclude_regex "collect2 version |^[A-Za-z0-9_]+=|/ldfe ")
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string(APPEND log " link line regex: [${linker_regex}]\n")
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string(REGEX REPLACE "\r?\n" ";" output_lines "${text}")
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foreach(line IN LISTS output_lines)
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set(cmd)
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if("${line}" MATCHES "${linker_regex}" AND
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NOT "${line}" MATCHES "${linker_exclude_regex}")
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if(XCODE)
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# Xcode unconditionally adds a path under the project build tree and
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# on older versions it is not reported with proper quotes. Remove it.
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string(REGEX REPLACE "([][+.*()^])" "\\\\\\1" _dir_regex "${CMAKE_BINARY_DIR}")
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string(REGEX REPLACE " -[FL]${_dir_regex}/([^ ]| [^-])+( |$)" " " xline "${line}")
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if(NOT "x${xline}" STREQUAL "x${line}")
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string(APPEND log " reduced line: [${line}]\n to: [${xline}]\n")
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set(line "${xline}")
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endif()
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endif()
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separate_arguments(args NATIVE_COMMAND "${line}")
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list(GET args 0 cmd)
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if("${cmd}" MATCHES "->")
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# LCC has '-> ' in-front of the linker
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list(GET args 1 cmd)
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endif()
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else()
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#check to see if the link line is comma-separated instead of space separated
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string(REGEX REPLACE "," " " line "${line}")
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if("${line}" MATCHES "${linker_regex}" AND
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NOT "${line}" MATCHES "${linker_exclude_regex}")
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separate_arguments(args NATIVE_COMMAND "${line}")
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list(GET args 0 cmd)
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if("${cmd}" MATCHES "exec:")
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# ibm xl sometimes has 'exec: ' in-front of the linker
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list(GET args 1 cmd)
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endif()
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endif()
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endif()
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set(is_msvc 0)
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set(search_static 0)
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if("${cmd}" MATCHES "${linker_regex}")
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string(APPEND log " link line: [${line}]\n")
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string(REGEX REPLACE ";-([LYz]);" ";-\\1" args "${args}")
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set(skip_value_of "")
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foreach(arg IN LISTS args)
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if(skip_value_of)
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string(APPEND log " arg [${arg}] ==> skip value of ${skip_value_of}\n")
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set(skip_value_of "")
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elseif("${arg}" MATCHES "^-L(.:)?[/\\]")
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# Unix search path.
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string(REGEX REPLACE "^-L" "" dir "${arg}")
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list(APPEND implicit_dirs_tmp ${dir})
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string(APPEND log " arg [${arg}] ==> dir [${dir}]\n")
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elseif("${arg}" MATCHES "^[-/](LIBPATH|libpath):(.+)")
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# MSVC search path.
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set(dir "${CMAKE_MATCH_2}")
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list(APPEND implicit_dirs_tmp ${dir})
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string(APPEND log " arg [${arg}] ==> dir [${dir}]\n")
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elseif(is_msvc AND "${arg}" STREQUAL "-link")
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string(APPEND log " arg [${arg}] ==> ignore MSVC cl option\n")
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elseif(is_msvc AND "${arg}" MATCHES "^(.*\\.[Ll][Ii][Bb])$")
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set(lib "${CMAKE_MATCH_1}")
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list(APPEND implicit_libs_tmp ${lib})
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string(APPEND log " arg [${arg}] ==> lib [${lib}]\n")
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elseif("${arg}" STREQUAL "-lto_library")
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# ld argument "-lto_library <path>"
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set(skip_value_of "${arg}")
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string(APPEND log " arg [${arg}] ==> ignore, skip following value\n")
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elseif("${arg}" MATCHES "^-l([^:].*)$")
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# Unix library.
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set(lib "${CMAKE_MATCH_1}")
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if(search_static AND lib MATCHES "^(gfortran|stdc\\+\\+)$")
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# Search for the static library later, once all link dirs are known.
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set(lib "SEARCH_STATIC:${lib}")
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endif()
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list(APPEND implicit_libs_tmp ${lib})
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string(APPEND log " arg [${arg}] ==> lib [${lib}]\n")
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elseif("${arg}" MATCHES "^(.:)?[/\\].*\\.a$")
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# Unix library full path.
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list(APPEND implicit_libs_tmp ${arg})
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string(APPEND log " arg [${arg}] ==> lib [${arg}]\n")
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elseif("${arg}" MATCHES "^[-/](DEFAULTLIB|defaultlib):(.+)")
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# Windows library.
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set(lib "${CMAKE_MATCH_2}")
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list(APPEND implicit_libs_tmp ${lib})
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string(APPEND log " arg [${arg}] ==> lib [${lib}]\n")
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elseif("${arg}" MATCHES "^(.:)?[/\\].*\\.o$")
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if(EXTRA_PARSE_COMPUTE_IMPLICIT_OBJECTS)
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list(APPEND implicit_objs_tmp ${arg})
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string(APPEND log " arg [${arg}] ==> obj [${arg}]\n")
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endif()
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if(obj_regex AND "${arg}" MATCHES "${obj_regex}")
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# Object file full path.
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list(APPEND implicit_libs_tmp ${arg})
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endif()
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elseif("${arg}" MATCHES "^-Y(P,)?[^0-9]")
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# Sun search path ([^0-9] avoids conflict with Mac -Y<num>).
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string(REGEX REPLACE "^-Y(P,)?" "" dirs "${arg}")
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string(REPLACE ":" ";" dirs "${dirs}")
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list(APPEND implicit_dirs_tmp ${dirs})
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string(APPEND log " arg [${arg}] ==> dirs [${dirs}]\n")
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elseif("${arg}" STREQUAL "-Bstatic")
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set(search_static 1)
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string(APPEND log " arg [${arg}] ==> search static\n" )
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elseif("${arg}" STREQUAL "-Bdynamic")
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set(search_static 0)
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string(APPEND log " arg [${arg}] ==> search dynamic\n" )
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elseif("${arg}" MATCHES "^-l:")
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# HP named library.
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list(APPEND implicit_libs_tmp ${arg})
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string(APPEND log " arg [${arg}] ==> lib [${arg}]\n")
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elseif("${arg}" MATCHES "^-z(all|default|weak)extract")
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# Link editor option.
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list(APPEND implicit_libs_tmp ${arg})
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string(APPEND log " arg [${arg}] ==> opt [${arg}]\n")
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elseif("${arg}" STREQUAL "cl.exe")
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string(APPEND log " arg [${arg}] ==> recognize MSVC cl\n")
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set(is_msvc 1)
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else()
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string(APPEND log " arg [${arg}] ==> ignore\n")
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endif()
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endforeach()
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break()
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elseif("${line}" MATCHES "LPATH(=| is:? *)(.*)$")
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string(APPEND log " LPATH line: [${line}]\n")
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# HP search path.
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string(REPLACE ":" ";" paths "${CMAKE_MATCH_2}")
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list(APPEND implicit_dirs_tmp ${paths})
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string(APPEND log " dirs [${paths}]\n")
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else()
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string(APPEND log " ignore line: [${line}]\n")
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endif()
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endforeach()
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# Look for library search paths reported by linker.
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if("${output_lines}" MATCHES ";Library search paths:((;\t[^;]+)+)")
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string(REPLACE ";\t" ";" implicit_dirs_match "${CMAKE_MATCH_1}")
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string(APPEND log " Library search paths: [${implicit_dirs_match}]\n")
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list(APPEND implicit_dirs_tmp ${implicit_dirs_match})
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endif()
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if("${output_lines}" MATCHES ";Framework search paths:((;\t[^;]+)+)")
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string(REPLACE ";\t" ";" implicit_fwks_match "${CMAKE_MATCH_1}")
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string(APPEND log " Framework search paths: [${implicit_fwks_match}]\n")
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list(APPEND implicit_fwks_tmp ${implicit_fwks_match})
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endif()
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# Cleanup list of libraries and flags.
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# We remove items that are not language-specific.
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set(implicit_libs "")
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foreach(lib IN LISTS implicit_libs_tmp)
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if("x${lib}" MATCHES "^xSEARCH_STATIC:(.*)")
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set(search_static 1)
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set(lib "${CMAKE_MATCH_1}")
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else()
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set(search_static 0)
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endif()
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if("x${lib}" MATCHES "^x(crt.*\\.o|gcc_eh.*|.*libgcc_eh.*|System.*|.*libclang_rt.*|msvcrt.*|libvcruntime.*|libucrt.*|libcmt.*)$")
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string(APPEND log " remove lib [${lib}]\n")
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elseif(search_static)
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# This library appears after a -Bstatic flag. Due to ordering
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# and filtering for mixed-language link lines, we do not preserve
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# the -Bstatic flag itself. Instead, use an absolute path.
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# Search using a temporary variable with a distinct name
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# so that our test suite does not depend on disk content.
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find_library("CMAKE_${lang}_IMPLICIT_LINK_LIBRARY_${lib}" NO_CACHE NAMES "lib${lib}.a" NO_DEFAULT_PATH PATHS ${implicit_dirs_tmp})
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set(_lib_static "${CMAKE_${lang}_IMPLICIT_LINK_LIBRARY_${lib}}")
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if(_lib_static)
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string(APPEND log " search lib [SEARCH_STATIC:${lib}] ==> [${_lib_static}]\n")
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list(APPEND implicit_libs "${_lib_static}")
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else()
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string(APPEND log " search lib [SEARCH_STATIC:${lib}] ==> [${lib}]\n")
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list(APPEND implicit_libs "${lib}")
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endif()
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elseif(IS_ABSOLUTE "${lib}")
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get_filename_component(abs "${lib}" ABSOLUTE)
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if(NOT "x${lib}" STREQUAL "x${abs}")
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string(APPEND log " collapse lib [${lib}] ==> [${abs}]\n")
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endif()
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list(APPEND implicit_libs "${abs}")
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else()
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list(APPEND implicit_libs "${lib}")
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endif()
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endforeach()
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if(EXTRA_PARSE_COMPUTE_IMPLICIT_OBJECTS)
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set(implicit_objs "")
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foreach(obj IN LISTS implicit_objs_tmp)
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if(IS_ABSOLUTE "${obj}")
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get_filename_component(abs "${obj}" ABSOLUTE)
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if(NOT "x${obj}" STREQUAL "x${abs}")
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string(APPEND log " collapse obj [${obj}] ==> [${abs}]\n")
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endif()
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list(APPEND implicit_objs "${abs}")
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else()
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list(APPEND implicit_objs "${obj}")
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endif()
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endforeach()
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endif()
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# Cleanup list of library and framework directories.
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set(desc_dirs "library")
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set(desc_fwks "framework")
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foreach(t dirs fwks)
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set(implicit_${t} "")
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foreach(d IN LISTS implicit_${t}_tmp)
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get_filename_component(dir "${d}" ABSOLUTE)
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string(FIND "${dir}" "${CMAKE_FILES_DIRECTORY}/" pos)
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if(NOT pos LESS 0)
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set(msg ", skipping non-system directory")
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else()
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set(msg "")
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list(APPEND implicit_${t} "${dir}")
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endif()
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string(APPEND log " collapse ${desc_${t}} dir [${d}] ==> [${dir}]${msg}\n")
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endforeach()
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list(REMOVE_DUPLICATES implicit_${t})
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endforeach()
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# Log results.
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string(APPEND log " implicit libs: [${implicit_libs}]\n")
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string(APPEND log " implicit objs: [${implicit_objs}]\n")
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string(APPEND log " implicit dirs: [${implicit_dirs}]\n")
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string(APPEND log " implicit fwks: [${implicit_fwks}]\n")
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# Return results.
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set(${lib_var} "${implicit_libs}" PARENT_SCOPE)
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set(${dir_var} "${implicit_dirs}" PARENT_SCOPE)
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set(${fwk_var} "${implicit_fwks}" PARENT_SCOPE)
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set(${log_var} "${log}" PARENT_SCOPE)
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if(EXTRA_PARSE_COMPUTE_IMPLICIT_OBJECTS)
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set(${EXTRA_PARSE_COMPUTE_IMPLICIT_OBJECTS} "${implicit_objs}" PARENT_SCOPE)
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endif()
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endfunction()
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cmake_policy(POP)
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